CN106683195A - AR scene rendering method based on indoor location - Google Patents
AR scene rendering method based on indoor location Download PDFInfo
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- CN106683195A CN106683195A CN201611256173.5A CN201611256173A CN106683195A CN 106683195 A CN106683195 A CN 106683195A CN 201611256173 A CN201611256173 A CN 201611256173A CN 106683195 A CN106683195 A CN 106683195A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/026—Services making use of location information using location based information parameters using orientation information, e.g. compass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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Abstract
The invention relates to the technical field of augmented reality, and provides an AR scene rendering method based on indoor location. The method includes the steps of building an indoor scene picture database containing feature point information, determining a best matched indoor scene picture corresponding to an instant preview image, calculating the deviation of the instant preview image and the best matched indoor scene picture, adjusting the indoor scene picture, displaying the best matched indoor scene picture in an AR scene, and achieving indoor AR scene rendering and generation. The method has the advantages that based on the indoor location technology, the limitation that picture acquisition and recognition speed is slow is broken through, the defects that indoor AR scene rendering is unstable and inaccurate are overcome, the comprehensive indoor AR scene rendering method is really set up, and an efficient mode in which the image acquisition speed is high, the recognition rate is high, the accuracy is high and scene rendering is lifelike is achieved.
Description
Technical field
The present invention relates to augmented reality field, more particularly to a kind of AR scene rendering methods based on indoor positioning.
Background technology
In recent years, with the fast development of national economy, the continuous progress of science and technology, social informatization and digitlization water
Flat steps up, under the promotion that wearable device rises, all kinds of AR（Augmented reality, Augmented Reality）Equipment
Emerge in an endless stream.Along with the mobile and the continuous breakthrough of image processing techniques of equipment, with reference to artificial intelligence and cloud computing not
Disconnected to go deep into, AR applications on the mobile apparatus are also more and more rich and varied, and AR technologies are defended in tourism, game, social entertainment, medical treatment
There has been application well in the fields such as raw, military and culture.
Augmented reality is the emerging computer application and human-computer interaction technology grown up on the basis of virtual reality technology,
It has merged computer vision, iconology, image procossing, multisensor and Display Technique.Augmented reality is realized will be counted
The dummy object of calculation machine generation is added to real scene exactly, successfully build it is truly seamless with virtual scene merge so that
The enhancing to real scene is reached, perception of the user to world around is expanded and strengthen.Due to intelligent terminal computing capability and cloud
The enhancing of computing capability, mobile e-business, real scene experience, information search push, the demand of location information services are caused
Augmented reality has a huge market value, augmented reality obtain mobile Internet, major colleges and universities and it is graduate further
Deeply expand and research.
At present, there are the acquisition methods for proposing that merchandise news is realized using augmented reality, to a certain extent can
To the experience of user's commodity three-dimensional image information, the concrete form of commodity is understood, but identification information is Quick Response Code, can only be applied
In specific commodity, the acquisition of information also needs to carry out short range scanning completion；Alipay platform releases AR red packets, based on position letter
Service and augmented reality are ceased, will be linked up on original simple line, become on-line off-line interaction, increased interesting and mutual
Dynamic property, but location information service is that, based on outdoor positioning mode, locating effect indoors is less desirable, exists certain
Limitation, real scene is not also innovated further with the matching process of virtual photo, the efficiency and effect of images match
Can also further be lifted.
The content of the invention
The purpose of the present invention is exactly to overcome the deficiencies in the prior art, there is provided a kind of AR scene renderings based on indoor positioning
Method, by technologies such as indoor positioning, artificial intelligence, cloud computing, image procossing and image recognitions, realizes indoor scene region
Confine, the rapid build of photographic intelligence database, the high efficiency extraction of image and identification, reach real scene during AR scene renderings
AR is generated, and the reality scene for strengthening user is changed, refined and actualization experience in time.
A kind of AR scene rendering methods based on indoor positioning of the present invention, comprise the following steps：
Step one, subregion is carried out to indoor scene take pictures, generation record has camera site, shooting direction, information of shooting angles
Indoor scene picture；Characteristic point information extraction is carried out to the indoor scene picture, foundation includes the room of characteristic point information
Interior scene picture database；
Step 2, obtained using the camera of mobile device and captured while it is currently located indoor location, angle, directional information
Instant preview image, the preview image is matched with the indoor scene picture database described in step one, it is determined that most
Matching indoor scene picture；
, relative to the deviation for most matching indoor scene picture, the deviation includes institute for step 3, the calculating preview image
Preview image is stated relative to the anglec of rotation for most matching indoor scene picture；
Most correspondence position of the matching indoor scene picture in AR scenes, transfers corresponding AR scenes wash with watercolours described in step 4, calculating
Dye material；The deviation adjusting in step 3 most matches indoor scene figure, by adjustment after most matching indoor scene figure
It is displayed in AR scenes, the most matching indoor scene figure after the adjustment is corresponding with the actual position in reality scene, realizes
Indoor AR scenes rendering and generating.
Further, camera site is the triaxial coordinate of shooting point in step one, and the origin of coordinates determines according to demand；Shoot
Direction is the angle of image center line projection line in the horizontal plane and direct north；Shooting angle is image center line and level
Angle between face.
Further, the determination of camera site uses the indoor positioning technologies of bluetooth-localizer beacon in step one；The bag
Indoor scene picture database containing characteristic point information is uploaded onto the server or high in the clouds.
Further, the mobile device in step 2 includes video game apparatus having memory cards, Medical Devices.
Further, preview image described in step 2 is matched with the indoor scene picture database, it is determined that most
The specific method for matching indoor scene picture includes：
Indoor location, angle, directional information that step 2.1 is currently located according to the mobile device camera, from the interior
Scene picture database filters out alternative picture group；
The step 2.2 pair preview image carries out feature point extraction, and characteristic point information identification ratio is carried out with the alternative picture group
It is right, it is determined that most matching indoor scene picture.
Further, in step 2.1, the camera site of the every pictures in the alternative picture group meets following condition：
1）The position of the mobile device camera is less than given threshold A with the distance of alternative picture shooting position；
2）The direction of mobile device camera is less than given threshold B with the shooting direction deviation of alternative photo；
3）The size of alternative photo is partially larger than given threshold C sector region, and the sector region is imaged by mobile device
The visible angle of head, position, direction are determined.
Further, the given threshold A is 0.2m-20m, and the given threshold B is 150-250, the given threshold C
It is 80-90%.-
Further, in step 2.2, it is to be chosen from the alternative picture group most to match indoor scene picture, pre- with described
Image characteristic point of looking at compares the alternative picture with most common trait points.
Beneficial effects of the present invention are：Picture in indoor scene picture database carries positioning, angle, directional information,
Hunting zone is greatly reduced when screening alternative photo group, is greatly improved and is obtained the efficiency of alternative picture group, accuracy and steady
It is qualitative；Most matching indoor scene picture and the deviation with preview image are quickly selected according to picture feature point information, deviation is adjusted
It is final to realize rendering and generating for interior AR scenes, give user most quick, true, stable interactive outdoor scene experience；This method
Based on indoor positioning technologies, break through image obtain and identification slow-paced limitation, evade indoor AR scene renderings it is unstable,
Inaccurate defect, the indoor AR scene generating methods of real Erecting and improving realize that image acquisition speed is fast, discrimination is high, standard
True property is strong, the genuine high effective model of scene rendering.
Brief description of the drawings
Fig. 1 show in the embodiment of the present invention schematic flow sheet for setting up indoor scene picture database.
The idiographic flow that Fig. 2 show a kind of AR scene rendering methods based on indoor positioning of the embodiment of the present invention is illustrated
Figure.
Specific embodiment
The specific embodiment of the invention is described in detail below in conjunction with specific accompanying drawing.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, and they can be mutually combined so as to reach
To superior technique effect.In the accompanying drawing of following embodiments, the identical label that each accompanying drawing occurs represent identical feature or
Person's part, in can be applied to different embodiments.
A kind of AR scene rendering methods based on indoor positioning of the embodiment of the present invention, comprise the following steps：
Step one, subregion is carried out to indoor scene take pictures, generation record has camera site, shooting direction, information of shooting angles
Indoor scene picture；Characteristic point information extraction is carried out to the indoor scene picture, foundation includes the room of characteristic point information
Interior scene picture database；
Step 2, obtained using the camera of mobile device and captured while it is currently located indoor location, angle, directional information
Instant preview image, the preview image is matched with the indoor scene picture database described in step one, it is determined that most
Matching indoor scene picture；
, relative to the deviation for most matching indoor scene picture, the deviation includes institute for step 3, the calculating preview image
Preview image is stated relative to the anglec of rotation for most matching indoor scene picture；
Most correspondence position of the matching indoor scene picture in AR scenes, transfers corresponding AR scenes wash with watercolours described in step 4, calculating
Dye material；The deviation adjusting in step 3 most matches indoor scene figure, by adjustment after most matching indoor scene figure
It is displayed in AR scenes, the most matching indoor scene figure after the adjustment is corresponding with the actual position in reality scene, realizes
Indoor AR scenes rendering and generating.
Camera site is the triaxial coordinate of shooting point in step one, and the origin of coordinates determines according to demand；Shooting direction is phase
The angle of machine center line projection line in the horizontal plane and direct north；Shooting angle is between image center line and horizontal plane
Angle.
The determination of camera site can be using the indoor positioning technologies of bluetooth-localizer beacon in step one；It can also be used
Indoor positioning technologies known to him；The indoor scene picture database for including characteristic point information uploads storage to server
Or high in the clouds, when needing to download, directly can be downloaded from high in the clouds or server.
Mobile device in step 2 includes video game apparatus having memory cards, Medical Devices.
Preview image described in step 2 is matched with the indoor scene picture database, it is determined that most matching indoor field
The specific method of scape picture includes：
Indoor location, angle, directional information that step 2.1 is currently located according to the mobile device camera, from the interior
Scene picture database filters out alternative picture group；The camera site of the every pictures in the alternative picture group meets following bar
Part（Preferably, all indoor scene pictures for meeting following condition should be included in alternative picture group）：
1）The position of the mobile device camera is less than given threshold A with the distance of alternative picture shooting position；
2）The direction of mobile device camera is less than given threshold B with the shooting direction deviation of alternative photo；
3）The size of alternative photo is partially larger than given threshold C sector region, and the sector region is imaged by mobile device
The visible angle of head, position, direction are determined.The given threshold A is 0.2m-20m, and the given threshold B is 150-250, institute
Given threshold C is stated for 80-90%.Specific threshold value A, B, C are determined within the above range according to the difference of real needs.
The step 2.2 pair preview image carries out feature point extraction, and characteristic point information knowledge is carried out with the alternative picture group
Do not compare, it is determined that most matching indoor scene picture；Most matching indoor scene picture is to be chosen from the alternative picture group, with
The preview image characteristic point compares the alternative picture with most common trait points.
Fig. 1 is a kind of idiographic flow that indoor scene picture database is set up in the present invention（But it is not limited to the flow）, it is right
Room area carries out camera and takes pictures, and with reference to indoor bluetooth localizer beacon and camera visible angle, directional information in itself, generates band
There is the photo of position, visible angle, directional information.Photo to generating carries out image procossing, sets picture depth, confines and cuts out
Required photo form is cut, image information is preserved and is uploaded to high in the clouds or server, form database.To high in the clouds or server
The photo at end carries out characterization, every photo eigen point information is demarcated, so as to build indoor scene region photographic intelligence number
According to storehouse.Rely on the technologies such as bluetooth indoor positioning, photographic intelligence feature more to enrich, be subject to the demarcation of characteristic point and treatment, after being
The extraction and identification of the image of the indoor AR scenes of phase provide more stable, reliable, approach accurately and quickly.
Fig. 2 shows a kind of idiographic flow of scene rendering method of the present invention（But it is not limited to the flow）, complete indoor
On the basis of scene photographic intelligence database sharing, when getting in, the camera of the mobile devices such as game or medical treatment is opened,
Current location, visible angle and directional information are obtained, it is whether consistent with the information of picture in database by judging, from server
It is upper to extract alternative picture group.Because picture is per se with location information and angle and directional information, and set during characterization
Certain redundancy is put, foundation relevant information, reduces hunting zone when extracting picture, obtains the close picture of deviation position,
The efficiency of picture is obtained so as to substantially increase, the Stability and veracity of alternative photo has been ensured, on this basis, from data
Alternative picture feature information is downloaded in storehouse, while mobile device camera acquisition current location, visible angle and direction is opened,
Current camera image pre-review information can be captured, the preview image to obtaining carries out characterization, after the completion for the treatment of and before
The alternative picture feature information downloaded is identified comparing, and filters out most matching indoor scene picture, and image recognition is compared into
After work(, actual position of the original picture in AR scenes is calculated, transfers AR scene rendering materials, reversely extrapolate photo rotation
Or the angle of skew, with reference to extra information superposition, the actual position being automatically adjusted in reality scene shows, so as to realize
Rendering and generating for indoor AR scenes, gives user most quick, true, stable interactive outdoor scene experience.
Beneficial effects of the present invention are：Picture in indoor scene picture database carries positioning, angle, directional information,
Hunting zone is greatly reduced when screening alternative photo group, is greatly improved and is obtained the efficiency of alternative picture group, accuracy and steady
It is qualitative；Most matching indoor scene picture and the deviation with preview image are quickly selected according to picture feature point information, deviation is adjusted
It is final to realize rendering and generating for interior AR scenes, give user most quick, true, stable interactive outdoor scene experience；This method
Based on indoor positioning technologies, break through image obtain and identification slow-paced limitation, evade indoor AR scene renderings it is unstable,
Inaccurate defect, the indoor AR scene generating methods of real Erecting and improving realize that image acquisition speed is fast, discrimination is high, standard
True property is strong, the genuine high effective model of scene rendering.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment be it is exemplary, no
Should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (8)
1. a kind of AR scene rendering methods based on indoor positioning, it is characterised in that comprise the following steps：
Step one, subregion is carried out to indoor scene take pictures, generation record has camera site, shooting direction, information of shooting angles
Indoor scene picture；Characteristic point information extraction is carried out to the indoor scene picture, foundation includes the room of characteristic point information
Interior scene picture database；
Step 2, obtained using the camera of mobile device and captured while it is currently located indoor location, angle, directional information
Instant preview image, the preview image is matched with the indoor scene picture database described in step one, it is determined that most
Matching indoor scene picture；
, relative to the deviation for most matching indoor scene picture, the deviation includes institute for step 3, the calculating preview image
Preview image is stated relative to the anglec of rotation for most matching indoor scene picture；
Most correspondence position of the matching indoor scene picture in AR scenes, transfers corresponding AR scenes wash with watercolours described in step 4, calculating
Dye material；The deviation adjusting in step 3 most matches indoor scene figure, by adjustment after most matching indoor scene figure
It is displayed in AR scenes, the most matching indoor scene figure after the adjustment is corresponding with the actual position in reality scene, realizes
Indoor AR scenes rendering and generating.
2. AR scene renderings method as claimed in claim 1, it is characterised in that camera site is the three of shooting point in step one
Axial coordinate, the origin of coordinates determines according to demand；Shooting direction is image center line projection line and direct north in the horizontal plane
Angle；Shooting angle is the angle between image center line and horizontal plane.
3. AR scene renderings method as claimed in claim 1, it is characterised in that the determination of camera site is using blue in step one
The indoor positioning technologies of tooth-localizer beacon；The indoor scene picture database for including characteristic point information uploads to service
Device or high in the clouds.
4. AR scene rendering methods as described in claim any one of 1-3, it is characterised in that the mobile device bag in step 2
Include video game apparatus having memory cards, Medical Devices.
5. AR scene rendering methods as described in claim any one of 1-3, it is characterised in that preview image described in step 2
Matched with the indoor scene picture database, it is determined that the specific method of most matching indoor scene picture includes：
Indoor location, angle, directional information that step 2.1 is currently located according to the mobile device camera, from the interior
Scene picture database filters out alternative picture group；
The step 2.2 pair preview image carries out feature point extraction, and characteristic point information identification ratio is carried out with the alternative picture group
It is right, it is determined that most matching indoor scene picture.
6. AR scene renderings method as claimed in claim 5, it is characterised in that in step 2.1, in the alternative picture group
Camera site per pictures meets following condition：
1）The position of the mobile device camera is less than given threshold A with the distance of alternative picture shooting position；
2）The direction of the mobile device camera is less than given threshold B with the shooting direction deviation of alternative photo；
3）The size of alternative photo is partially larger than given threshold C sector region, and the sector region is the mobile device
The visible angle of camera, position, can shooting area determined by direction.
7. AR scene renderings method as claimed in claim 6, it is characterised in that the given threshold A is 0.2m-20m, described
Given threshold B is 150-250, the given threshold C is 80-90%.
8. AR scene renderings method as claimed in claim 5, it is characterised in that in step 2.2, most matches indoor scene picture
It is to be chosen from the alternative picture group, the alternative figure with most common trait points is compared with the preview image characteristic point
Piece.
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| CN107220503A (en) * | 2017-05-31 | 2017-09-29 | 上海联影医疗科技有限公司 | Information processing method and information processing system |
| CN108334627A (en) * | 2018-02-12 | 2018-07-27 | 北京百度网讯科技有限公司 | Searching method, device and the computer equipment of new media content |
| CN108905208A (en) * | 2018-06-21 | 2018-11-30 | 珠海金山网络游戏科技有限公司 | A kind of electronic gaming method and device based on augmented reality |
| CN108989672A (en) * | 2018-07-26 | 2018-12-11 | 维沃移动通信有限公司 | A kind of image pickup method and mobile terminal |
| CN110136175A (en) * | 2019-05-21 | 2019-08-16 | 杭州电子科技大学 | A kind of indoor typical scene matching locating method neural network based |
| CN110441807A (en) * | 2019-07-29 | 2019-11-12 | 阎祯祺 | A kind of localization method and system of indoor user mobile terminal |
| CN110596997A (en) * | 2018-06-13 | 2019-12-20 | 苏州宝时得电动工具有限公司 | Installation positioning method and device and optical projection equipment |
| CN110784980A (en) * | 2019-10-28 | 2020-02-11 | 星络智能科技有限公司 | Life scene-based light configuration method, server and storage medium |
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| CN110136175A (en) * | 2019-05-21 | 2019-08-16 | 杭州电子科技大学 | A kind of indoor typical scene matching locating method neural network based |
| CN110441807A (en) * | 2019-07-29 | 2019-11-12 | 阎祯祺 | A kind of localization method and system of indoor user mobile terminal |
| CN110784980A (en) * | 2019-10-28 | 2020-02-11 | 星络智能科技有限公司 | Life scene-based light configuration method, server and storage medium |
| CN111581547A (en) * | 2020-06-04 | 2020-08-25 | 浙江商汤科技开发有限公司 | Tour information pushing method and device, electronic equipment and storage medium |
| CN111581547B (en) * | 2020-06-04 | 2023-12-15 | 浙江商汤科技开发有限公司 | Tour information pushing method and device, electronic equipment and storage medium |
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